<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区 -->
    <el-card>
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable
                    @clear="getGoodList">
          <el-button slot="append" icon="el-icon-search"
                      @click="getGoodList"></el-button>
        </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="goAddpage">添加商品</el-button>
        </el-col>
      </el-row>

      <!-- table表格区域 -->
      <el-table :data="goodsList" border stripe>
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column label="商品名称" prop="goods_name"></el-table-column>
        <el-table-column label="商品价格(元)" prop="goods_price" width="95px"></el-table-column>
        <el-table-column label="商品重量" prop="goods_weight" width="70px"></el-table-column>
        <el-table-column label="创建时间" prop="add_time" width="140px">
          <template slot-scope="scope">
            {{scope.row.add_time | dateFormat}}
          </template>
        </el-table-column>
        <el-table-column label="操作" width="130px">
          <template slot-scope="scope">
            <el-button type="primary" icon="el-icon-edit" size="mini"></el-button>
            <el-button type="danger" icon="el-icon-delete" size="mini"
                        @click="removeById(scope.row.goods_id)"></el-button>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange"
      :current-page="queryInfo.pagenum" :page-sizes="[5, 10, 15, 20]"
      :page-size="queryInfo.pagesize" layout="total, sizes, prev, pager, next, jumper" 
      :total="total" background>
    </el-pagination>
    </el-card>
  </div>
</template>

<script>
  export default {
    name: "GoodsList",
    data() {
      return {
        queryInfo: { //查询参数对象
          query: '',
          pagenum: 1, //当前页码(默认为1)
          pagesize: 10, //每页显示多少条数据(默认为10)
        },
        goodsList: [], //商品列表
        total: 0, //总数据条数
      }
    },
    created() {
      this.getGoodList()
    },
    methods: {
      //根据分页获取对应的商品列表
      async getGoodList() {
        const {data:res} = await this.$http.get('goods',{
          params: this.queryInfo
        })

        if(res.meta.status != 200) {
          return this.$message.error('获取商品列表失败！')
        }
        this.$message.success('获取商品列表成功！')
        // console.log(res.data);
        this.goodsList = res.data.goods
        this.total = res.data.total
      },
      //当前页面显示条数发生变化
      handleSizeChange(newSize) {
        this.queryInfo.pagesize = newSize
        this.getGoodList()
      },
      //当前页码值发生变化
      handleCurrentChange(newPage) {
        this.queryInfo.pagenum = newPage
        this.getGoodList() //刷新列表
      },
      //删除商品列表函数
      async removeById(id) {
        const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => err)

        if(confirmResult != 'confirm') {
          return this.$message.info('已取消删除！')
        }
        const {data:res} = await this.$http.delete(`goods/${id}`)
        
        if(res.meta.status != 200) {
          return this.$message.error('删除失败')
        }
        this.$message.success('删除成功')
        this.getGoodList()
      },
      //跳转到添加商品界面
      goAddpage() {
        this.$router.push('/goods/add')
      }
    },
  }
</script>

<style lang="less" scope>

</style>